Advertising is a paid form of market and social communication consistent with the interests of advertisers and communities where messages are usually sent through mass media to a public or target group in a systematic and designed manner with the purpose of affecting recipients and building attitudes and behaviors. Advertising as a way of advertising must contain information and convincing messages about what is advertised and must be placed in places where it will be easy to notice. Advertising technology has evolved through history and is still developing today. In advertising as well as in every communication, there is a message carrier from sender to recipient, and this is the media. The media are divided into personal, non-personal and digital media. Advertising through the media is divided into advertising on television, radio advertising, printing, advertisements and advertising on the internet. The choice of effective media depends on the advertised product, target market segment, and advertising goals. There are several forms of advertising distinct, some of which are display advertising, social networking, SEO optimization, Google AdWords, and contextual advertising. When classical marketing creates the need, digital marketing uses the internet and his power to meet the need for classic marketing in new and innovative ways. By using the internet as an interactive media, it is possible to collect a much larger amount of data on consumers and their behavior. Some of the most commonly used methods for measuring internet performance are the ad request, visit, and click through rate. There are six different models of internet Advertising Payment: Fixed Cost, Cost Per Activity, Cost Per Engagement, and Model By Review. The main problem for advertisers on the internet is to develop a program to remove advertising content. One type of advertising over the internet is advertising on web portals. In terms of the internet, the portal is a web site that is the main starting point from which the user moves into an exploration area research. Horizontal, vertical, corporate and other (portals for entertainment, ecological, sports, portal for children) portals differ. Tportal.hr is one of the most renowned new portals in Croatia with daily updates of news from Croatia and the world. Contains a mild tabloid concept, placing an emphasis on news that interests an ordinary man. On the portal there is the possibility of advertising through different ad formats and prices. In the end, there are five different T-Portal ads analyses.